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Eggshell cobalt-based Fischer-Tropsch synthesis catalyst, and preparation method and application thereof

A catalyst, cobalt-based technology, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, catalysts for physical/chemical processes, etc. The effect of easy regulation, easy mass production, and low price

Active Publication Date: 2014-08-27
中科潞安能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of n-undecane in this method will increase the preparation cost of the catalyst, and it is not suitable for large-scale preparation of catalysts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Catalyst preparation: put metal aluminum balls (particle size 2mm) into distilled water and boil for 6 hours, filter, and dry the filter cake at 60°C for 20 hours. Add 2L of 1.0mol / L sodium hydroxide solution to the obtained metal ball at a rate of 2ml / min, and after electromagnetic stirring treatment for 30h, filter and wash until neutral, and dry the filter cake at 60°C for 10h, and then put Calcined at 500°C for 6 hours to obtain a metal aluminum ball carrier with an outer layer of alumina and an inner layer of uncorroded metal aluminum. The particle size of the carrier is 2mm, the thickness of the corrosion layer is 0.15mm, and the specific surface is 210m 2 / g, the average pore diameter is 18nm, and the pore volume is 0.42cm 3 / g. Weigh Co(NO 3 ) 2 ·6H 2 O, measure deionized water according to the equal-volume impregnation method, prepare a salt solution and impregnate it on the above-mentioned carrier, the impregnation time is 6h, dry at 60°C for 10h after im...

Embodiment 2

[0034]Catalyst preparation: put metal magnesium balls (particle size 3mm) into distilled water and boil for 6 hours, filter, and dry the filter cake at 60°C for 20 hours. Will 10L1.0×10 -2 mol / L nitric acid solution was added to the obtained metal ball at a rate of 5ml / min, and after being treated with electromagnetic stirring for 20 hours, it was filtered and washed until neutral, and the filter cake was dried at 80°C for 10h, and then roasted at 400°C for 4h under a nitrogen atmosphere. A metal magnesium ball carrier whose outer layer is magnesium oxide and whose inner layer is uncorroded metal magnesium is obtained. The particle size of the carrier is 3mm, the thickness of the corrosion layer is 0.10mm, and the specific surface is 180m 2 / g, the average pore diameter is 25nm, and the pore volume is 0.56cm 3 / g. Weigh Co(NO 3 ) 2 ·6H 2 O, measure deionized water according to the equal-volume impregnation method, prepare a salt solution and impregnate it on the above-me...

Embodiment 3

[0037] Catalyst preparation: put metal aluminum balls (particle size 4mm) into distilled water and boil for 6 hours, filter, and dry the filter cake at 60°C for 20 hours. Add 2L of 1.0mol / L hydrochloric acid solution to the obtained metal ball at a rate of 1ml / min, and after electromagnetic stirring treatment for 30h, filter and wash until neutral, dry the filter cake at 60°C for 10h, and then dry it at 300°C under a nitrogen atmosphere Calcined for 6 hours, the outer layer is aluminum oxide, and the inner layer is uncorroded metal aluminum ball carrier. The particle size of the carrier is 4mm, the thickness of the corrosion layer is 0.25mm, and the specific surface is 400m 2 / g, the average pore diameter is 12nm, and the pore volume is 0.81cm 3 / g. Weigh Co(NO 3 ) 2 ·6H 2 O, measure deionized water according to the equal-volume impregnation method, prepare a salt solution and impregnate it on the above-mentioned carrier, the impregnation time is 6h, dry at 60°C for 10h a...

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PUM

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Abstract

The invention discloses an eggshell cobalt-based Fischer-Tropsch synthesis catalyst which comprises an active ingredient and a carrier, wherein the catalyst comprises the raw material by weight percent: 5 to 40 percent of cobalt oxide and the balance being metallic ball carriers; the interiors of the metallic ball carriers are provided with uncorroded metal materials, and the outer layers of the metallic ball carriers are metal oxide. The catalyst has the advantages of being simple in preparation process, low in cost, controllable in shell layer thickness and applicable to large-scale production.

Description

technical field [0001] The invention relates to a catalyst, its preparation method and application, in particular to an eggshell-type cobalt-based catalyst, its preparation method and its application in Fischer-Tropsch synthesis. technical background [0002] Fischer-Tropsch synthesis refers to the process of converting coal, natural gas or biomass into hydrocarbons through synthesis gas under the action of a catalyst. The catalysts used in the Fischer-Tropsch synthesis industry are divided into two types: iron-based and cobalt-based, of which cobalt-based catalysts have high activity, low methane selectivity, and C 5+ The advantages of high selectivity and low water gas reaction make it the most competitive catalyst in Fischer-Tropsch synthesis. Therefore, it is of great significance to design high-performance and low-cost cobalt-based FTS catalysts. [0003] Cobalt-based Fischer-Tropsch synthesis reactors mainly include slurry bed reactors and fixed bed reactors. Among ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J35/10C10G2/00
Inventor 李德宝王达侯博贾丽涛阿从标林明桂王俊刚
Owner 中科潞安能源技术有限公司
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